Photomechanical screen and process of making same



J. A. H. HATTr PHOTOIVIECHANICAL SCREEN AND PROCESS OF MAKING SAME.

APPLICATION FILED OCT. II. I916.

1. wElKfQmQS. Patented ept. 36. 1919.

F .2 I J 5 fi 4 f {1 2 6 .11 if ii if I 8 4 vi im/w'i w ATTORNEYS first-class work, the essential, property of substantially perfect uniformity in texture, sharpness and clearness of the screen figures, having perfect transparency in the lighttransmitting portions, and having the light obstructive figures oft any dcsired degree of translucency or opacity, and being of uniform translucency and opacity throughout the entire screen, and having combined there-v "With the capability of imparting color, or

colors, to the screenfigures, and thereby imparting a desired or selected color efi'ect to the entire screen. I

The pigmented screen figures are indicated in Fig. 5 by reference-numeral 9. A cover screen 10 may be applied to the screen for protection against dirt and damage in a Well known manner. V From all the foregoing it :will be understood that a photo-1 iechanical screen and process of producing same has been provided realizing the objects and advantages herein pointed out together with other objects and advantages, which in part will be obvious and in part may be learned from practice of the invention. It will be further understood that changes may i made iiro'm the precise description and p ocedure set fo'th terrace herein, Without departing from. theprinciples of the invention and Without sacrific ing its chief advantages.

What I claim .as my invention and desire to secure by Letters Patent is:

1. The process of producing a photo-incchanical screen which comprises applying to a transparent plate a light-sensitive layer, changing the solubility of said layer in corn forn'iation with the desired screen figure by the action of li 'ht. and 'dissolvin the relatively soluble portions of said layer to pro vide minute transparent, light transmitting areas between the screen figures formedby the undissolved layer.

2. The process of producing a photo-me chanical screen which comprises applying the screen figures, said layer being impregnated with a pigment.

f In testimony whereof I have signed my name to this specificatien in the presence of two subscribing Witnesses.

' JOSEPH ARTEUR HENRY HATE". v

Witnesses CHARLES Jonuson, LOUISA Loans, 

